Information on Biewers.
http://www.biewers.com/?gclid=CNaniI...FR1EWAodRSuhsw
I found this sitre, thought some of you might find it interesting.
So form reading this article, they are recognized as a breed separate from yorkies and can no longer be mixed with yorkies even though that is where they oiginated.
My guess is, the partis will eventually go the same route.